<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input
            clearable
            placeholder="请输入内容"
            v-model="queryInfo.query"
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" prop="mg_state">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <!-- 获取数据 -->
            <!-- {{ scope.row }} -->
            <!-- 开关 -->
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分享 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                @click="setRole(scope.row)"
                type="warning"
                icon="el-icon-setting"
                size="mini"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input disabled v-model="editForm.username"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogColsed"
    >
      <div>
        <p>当前的用户：{{ userinfo.username }}</p>
        <p>当前的角色：{{ userinfo.role_name }}</p>
        <p>
          分配新角色:
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolseList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="savaRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱正则
      const regEmail = /^[a-zA-Z0-9_-]+@[a-zA-Z0-9_-]+(\.[a-zA-Z0-9_-]+)+$/

      if (regEmail.test(value)) {
        // 合法邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号正则
      const regMobile = /^[1](([3][0-9])|([4][5-9])|([5][0-3,5-9])|([6][5,6])|([7][0-8])|([8][0-9])|([9][1,8,9]))[0-9]{8}$/

      if (regMobile.test(value)) {
        // 合法邮箱
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取用户列表的对象参数
      queryInfo: {
        query: '',
        pagenum: 1, // 当前页数
        pagesize: 2 // 当前每页显示的数据
      },
      userlist: [],
      total: 0,
      // 默认隐藏对话框
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名！', tigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3~10个字符之间',
            tigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码！', tigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6~15个字符之间',
            tigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱！', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号！', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      // 默认对话框关闭
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单验证对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱！', tigger: 'blur' },
          { validator: checkEmail, tigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号！', tigger: 'blur' },
          { validator: checkMobile, tigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要分配权限的用户信息
      userinfo: {},
      rolseList: [],
      // 已选中的id值
      selectRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  mounted() {},
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      // console.log(res) // meta: {msg: "获取管理员列表成功", status: 200} data: {total: 5, pagenum: 1, users: Array(2)}
      if (res.meta.status !== 200)
        return this.$message.error('获取用户列表失败！')
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      // 重新获取数据
      this.getUserList()
    },
    // 监听页面值切换事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      // 重新获取数据
      this.getUserList()
    },
    // 监听 开关 状态
    async userStateChanged(userinfo) {
      // console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        // 获取失败后取反
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户失败！')
      }
      this.$message.success('更新成功！')
    },
    // 监听 添加用户对话框关闭按钮 状态
    addDialogClosed() {
      // 重置表单
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid) // true false
        if (!valid) return
        // 发起添加用户请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 关闭对话框
        this.addDialogVisible = false
        // 重新获取数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      // 发起请求
      const { data: res } = await this.$http.get('users/' + id)
      // console.log(res)
      if (res.meta.status !== 200)
        return this.$message.error('查询用户信息失败!')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听用户对话框事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户数据请求
        const { data: res } = await this.$http.put(
          'users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 重新获取数据
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据id删除用户
    async removeUserById(id) {
      // console.log(id);
      // 提示是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => {
        return err
      })
      // console.log(confirmResult) // confirm / cancel
      // 取消删除
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }
      const { data: res } = await this.$http.delete('users/' + id)
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户信息失败！')
      }
      this.$message.success('删除用户信息成功！')
      // 解决留白问题
      if (this.total % this.queryInfo.pagesize == 1) {
        this.queryInfo.pagenum
      }
      // 重新获取数据
      this.getUserList()
    },
    // 展分配角色的对话框
    async setRole(userinfo) {
      this.userinfo = userinfo
      // 获取所有角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolseList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async savaRoleInfo() {
      if (!this.selectRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(
        `users/${this.userinfo.id}/role`,
        {
          rid: this.selectRoleId
        }
      )
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败!')
      }
      this.$message.success('更新角色成功!')
      // 重新渲染
      this.getUserList()
      // 关闭对话框
      this.setRoleDialogVisible = false
    },
    // 监听分配角色对话框关闭事件
    setRoleDialogColsed() {
      this.selectRoleId = ''
      this.userinfo = {}
    }
  }
}
</script>

<style scoped lang="less">
.el-card {
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.15) !important;
}
.el-table {
  margin-top: 15px;
  font-size: 12px;
}
</style>
